Hm, personally I didn't really like the voice acting. Mister Grandpa didn't really sound like a grandpa to me. And the guy recruiting for the British army seemed to make a mistake at here
Besides that you guys did well to incorporate the freeze ability to make them sit down. That was nice !
However, overall I am not really impressed. It doesn't really feel like a trailer to me, I dont know what the movie is about. I can geuss that that guy joins up with the British army or maybe some other army. Apperenlty he doesn't have a very good relationship with his father. But that's it.
Also it doesn't really sound feasible to make 10 episodes everythursday night.
I can tell you that one episode of about 5 minutes can already be very tough to make in a week's time.
Good luck, have fun and give it your best. If someone makes a mistake, I am afraid he has to do it over again. Unless it's like a minor glitch in the background. But if important characters do something wrong or certainly when someone doesn't voice something correctly it is important to do it again.